Vehicle Segment:
Premium 125cc scooter, often positioned as a stylish and sporty urban commuter
Target Audience:
Young riders, urban commuters seeking a blend of performance and style
Key Competitors:
Piaggio Skipper, Honda Pantheon, Yamaha Majesty 125, Kymco Xciting 125
Design:
Aggressive styling, aerodynamic fairing, modern instrument panel
Performance:
Sporty handling, agile for city navigation, capable of highway speeds (within 125cc class limitations)
Practicality:
Under-seat storage, comfortable seating position
Engine Mechanical:
Cylinder head, valves, piston, crankshaft, connecting rod, lubrication system, cooling system, starting system, ignition system
Engine Electrical:
Ignition timing, spark plugs, wiring diagrams, ECU diagnostic codes, battery, charging system
Fuel System:
Carburetor (Mikuni BS26 or similar), fuel pump, fuel lines, fuel filter, idle speed control
Transmission:
Automatic Continuously Variable Transmission (CVT), clutch operation, variator maintenance, torque converter, final drive
Brakes:
Front disc brake (caliper, master cylinder, brake fluid), rear drum brake, brake lines, parking brake
Suspension:
Front telescopic forks (oil level, seal replacement, spring preload), rear shock absorber, linkage maintenance
Steering:
Handlebar assembly, steering stem bearings, linkage inspection
Electrical System:
Lighting circuits (headlight, taillight, turn signals), horn, starter motor, battery charging, fuses, relays, instrument cluster
Bodywork:
Panel removal and installation, fairings, seat, storage compartments, lighting fixtures
Maintenance:
Oil changes, filter replacements (oil, air), spark plug replacement, brake fluid flush, coolant checks, valve clearance adjustment
Troubleshooting:
Diagnostic flowcharts for starting issues, poor performance, electrical faults, braking problems
Repair:
Engine rebuild, carburetor tuning, CVT belt replacement, brake system overhauls, suspension fork servicing, electrical component repair
Installation:
Component replacement (e.g., brake pads, starter motor, ignition coil), accessory installation guidelines
Depth Level:
Comprehensive: from routine maintenance to complete engine and transmission overhauls
Diagnostic Capability:
Detailed diagnostic procedures and fault code interpretation
Special Tools:
Identification and usage instructions for specialized tools
Engine Type:
Four-stroke, liquid-cooled, single-cylinder
Engine Displacement:
124 cc
Bore X Stroke:
52 mm x 58.6 mm (Approximate)
Compression Ratio:
10.5:1 (Typical)
Valve Train:
SOHC, 4 valves per cylinder
Horsepower Max:
Approx. 14-15 HP @ 9,000 RPM (Varies slightly by market/tuning)
Torque Max:
Approx. 11-12 Nm @ 7,500 RPM (Varies slightly)
Carburetor Model:
Mikuni BS26 (or equivalent Japanese carburetor)
Fuel Type:
Unleaded gasoline (91 RON or higher)
Fuel Tank Capacity:
Approx. 9 liters
Crash Test Ratings:
Not applicable for scooters in the same manner as automobiles; focus on component integrity
Braking System:
Front hydraulic disc brake, rear drum brake for effective stopping power
Lighting:
Halogen headlight, LED taillight and brake light, front and rear turn signals
Frame Construction:
Steel underbone frame for rigidity and stability
Tires:
Tubeless tires for improved puncture resistance (e.g., 120/70-14 front, 140/60-14 rear)
Instrument Cluster:
Analog speedometer, tachometer, fuel gauge, coolant temperature gauge, indicator lights (turn signals, high beam, oil pressure)
ABS:
ABS was not a standard feature on the 2003 Leonardo 125 model
Connectivity Features:
None typical for this model year; focus on mechanical and electrical systems.
Engine Oil Change:
Every 3,000 - 4,000 km or annually
Oil Filter Replacement:
Every engine oil change
Air Filter Cleaning Replacement:
Every 5,000 - 6,000 km (cleaning), replacement as needed
Spark Plug Replacement:
Every 8,000 - 10,000 km
Valve Clearance Adjustment:
Every 10,000 - 12,000 km
Cvt Belt Inspection Replacement:
Inspect every 8,000 km, replace every 15,000 - 20,000 km
Engine Oil Type:
API SG or higher, SAE 10W-40 synthetic or semi-synthetic motorcycle oil
Engine Oil Capacity:
Approx. 1.4 - 1.6 liters (with filter change)
Coolant Type:
Ethylene glycol-based antifreeze with corrosion inhibitors, mixed 50/50 with distilled water
Brake Fluid Type:
DOT 4 hydraulic brake fluid
Final Drive Oil Type:
SAE 80W-90 hypoid gear oil
Common Wear Items:
CVT belt, variator rollers, brake pads, rear shock absorber, fork seals
Carburetor Tuning:
Can be sensitive to altitude and atmospheric changes, requiring periodic tuning
Electrical Connectors:
Corrosion or loose connections can cause intermittent electrical faults
Cooling System:
Regular checks for coolant level and leaks are important to prevent overheating
